EPA criticized over asbestos clean-up research The US Environmental Protection Agency's internal watchdog has found that the agency's costly and time-consuming experiments on alternative asbestos control methods lacked effective oversight and threatened human health.

Viruses melt 'glassy' DNA US Researchers have identified the factors that enable viral DNA to turn from solid to liquid, which allows them to infect host cells. They say the process could become a target for new antiviral therapies.

Review says cheaper drug is safe for eye disease Researchers have added weight to the argument that health services should use the cancer drug Avastin (bevacizumab) to treat age-related wet macular degeneration, instead of the more expensive Lucentis (ranibizumab).

Coated nanoparticles show Alzheimer's promise Nanoparticles coated in an amino acid polymer have been found to prevent the formation of amyloid fibrils -- incorrectly folded protein fibers associated with the development of neurodegenerative diseases.

Appreciating art criticism Liu Bolin has commented on the degradation of China's environment and the chemical adulteration of its food and drink. His art is displayed in a new exhibition, A colorful world?, at the Klein Sun Gallery in New York.